Azimuth shafting mechanical brake
A mechanical, azimuth axis technology, applied in the direction of axial brakes, brake types, mechanical equipment, etc., can solve the problems of increased difficulty in the design of the telescope azimuth shaft system, large space occupation, and unfavorable observation of the telescope optical system
Active Publication Date: 2016-03-02
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
The brakes on the market are mainly divided into two types, one is electromagnetic brakes and the other is hydraulic brakes. The working mode of electromagnetic brakes is power-on release and power-off braking. When the instrument is working, the brakes are always in a power-on state. Large heat is not conducive to the observation of the telescope's optical system; the hydraulic brake needs to be equipped with a hydraulic cylinder, which takes up a lot of space and adds difficulties to the structural design of the telescope's azimuth shaft system
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[0008] Below in conjunction with accompanying drawing, the present invention is described in detail:
[0009] like figure 1 and 2 As shown, when the telescope and theodolite do not work, the friction plate 8 is in contact with the lower end surface of the turntable under the action of the preload spring 7, and the brake is in the braking state to keep the azimuth shaft system fixed. When the telescope is ready to work, step The motor 1 rotates according to the set number of steps, the drive gear 3 rotates with the rotating shaft of the stepper motor 1, thereby driving the screw gear 2 to rotate, and the screw gear 2 drives the ball screw 11 to rotate in the bearing assembly 12, driving The screw nut 9 moves downward, the screw nut 9 drives the friction plate 8 and the guide shaft 10 to move downward against the elastic force of the preload spring 7, the guide shaft 10 moves downward along the shaft hole of the fixed seat 6, and the stepping motor 1 rotates The set number of ...
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The invention discloses a mechanical brake for an azimuth axis system and relates to a brake for telescopes and theodolites. According to the mechanical brake, a motor installation plate is fixedly connected to the lower surface of an upper base plate, a stepping motor is fixedly connected to the motor installation plate, a driving gear is fixedly connected to a rotary shaft of the stepping motor, an electromagnet is fixedly connected to an electromagnet fixing plate, the electromagnet fixing plate is fixedly connected to the motor installation plate, a sensor is fixedly connected to the motor installation plate, a position pin compression reset spring is fixedly connected with a telescopic rod of the electromagnet, a fixing base is fixedly connected to the upper surface of the upper base plate, a guiding shaft is arranged in a shaft hole of the fixing base in a penetrating mode and can move in the axial direction, a friction plate compression preloading spring is fixedly connected with the guiding shaft, a lead screw nut is fixedly connected with a friction plate, a ball screw is connected with the fixing base through a bearing assembly by means of a revolute pair, and a lead screw gear is fixedly connected to one end of the ball screw and is meshed with the driving gear. The brake is compact is structure and small in occupied space, does not generate heat, and facilitates the structural arrangement of the azimuth axis system.
Description
technical field [0001] The invention relates to a brake, in particular to an azimuth shaft system brake for telescopes and theodolites. Background technique [0002] The rotational inertia of the azimuth shaft system of the large telescope is very large, and it is difficult to stop the rotation in a short period of time due to sudden power failure during the rotation. There are two main types of brakes on the market, one is electromagnetic brake and the other is hydraulic brake. The working mode of electromagnetic brake is power-on release and power-off braking. When the instrument is working, the brake is always energized. The large heat is not conducive to the observation of the optical system of the telescope; the hydraulic brake needs to be equipped with a hydraulic cylinder, which occupies a large space and makes the structural design of the azimuth shaft system of the telescope more difficult. SUMMARY OF THE INVENTION [0003] Aiming at the special requirements of t...
Claims
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IPC IPC(8): F16D55/02F16D65/14F16D121/14F16D121/18F16D123/00
Inventor 王志臣王国强乔兵
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI